The Sxx calculator is designed to determine the sum of squared deviations from the mean of independent variables.
The formula to compute Sxx is:
Sxx = Σ(x_{i}  x̄)^{2}
Where,
x_{i} = Each data point of the independent variable,
x̄ = Mean of sample.
The Sxx is used to compute the slope of a regression line in linear regression.
b_{1} = 
